LOANS (Impaired Loans Not Covered by Loss Share Agreements) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Unpaid Principal Balance
Impaired loans with a related allowance	$ 17,721
Impaired loans without a related allowance	75,171
Total impaired loans held to maturity	92,892
Loan Balance
Impaired loans with a related allowance	17,189
Impaired loans without a related allowance	69,863
Total impaired loans held to maturity	87,052
Impaired loans, related allowance recorded	8,172
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	18,217
Impaired loans without a related allowance	67,721
Total impaired loans held to maturity	85,938
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	39
Impaired loans without a related allowance	1,596
Total loans held to maturity	1,635
Commercial and industrial | Commercial and industrial
Unpaid Principal Balance
Impaired loans with a related allowance	11,727
Impaired loans without a related allowance	22,525
Total impaired loans held to maturity	34,252
Loan Balance
Impaired loans with a related allowance	11,710
Impaired loans without a related allowance	20,104
Total impaired loans held to maturity	31,814
Impaired loans, related allowance recorded	6,276
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	11,757
Impaired loans without a related allowance	19,141
Total impaired loans held to maturity	30,898
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	6
Impaired loans without a related allowance	782
Total loans held to maturity	788
Commercial and industrial | Owner occupied commercial real estate
Unpaid Principal Balance
Impaired loans with a related allowance	712
Impaired loans without a related allowance	8,756
Total impaired loans held to maturity	9,468
Loan Balance
Impaired loans with a related allowance	712
Impaired loans without a related allowance	8,756
Total impaired loans held to maturity	9,468
Impaired loans, related allowance recorded	352
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	1,435
Impaired loans without a related allowance	8,337
Total impaired loans held to maturity	9,772
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	22
Impaired loans without a related allowance	341
Total loans held to maturity	363
Commercial and industrial | Non-owner occupied commercial real estate
Unpaid Principal Balance
Impaired loans with a related allowance	138
Impaired loans without a related allowance	1,592
Total impaired loans held to maturity	1,730
Loan Balance
Impaired loans with a related allowance	138
Impaired loans without a related allowance	1,592
Total impaired loans held to maturity	1,730
Impaired loans, related allowance recorded	33
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	0
Impaired loans without a related allowance	1,515
Total impaired loans held to maturity	1,515
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	0
Impaired loans without a related allowance	62
Total loans held to maturity	62
Commercial and industrial | Real estate construction
Unpaid Principal Balance
Impaired loans with a related allowance	17
Impaired loans without a related allowance	668
Total impaired loans held to maturity	685
Loan Balance
Impaired loans with a related allowance	17
Impaired loans without a related allowance	668
Total impaired loans held to maturity	685
Impaired loans, related allowance recorded	0
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	0
Impaired loans without a related allowance	636
Total impaired loans held to maturity	636
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	0
Impaired loans without a related allowance	26
Total loans held to maturity	26
Agricultural and agricultural real estate
Unpaid Principal Balance
Impaired loans with a related allowance	2,751
Impaired loans without a related allowance	19,113
Total impaired loans held to maturity	21,864
Loan Balance
Impaired loans with a related allowance	2,237
Impaired loans without a related allowance	16,317
Total impaired loans held to maturity	18,554
Impaired loans, related allowance recorded	916
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	2,739
Impaired loans without a related allowance	16,837
Total impaired loans held to maturity	19,576
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	0
Impaired loans without a related allowance	60
Total loans held to maturity	60
Residential real estate
Unpaid Principal Balance
Impaired loans with a related allowance	1,378
Impaired loans without a related allowance	19,382
Total impaired loans held to maturity	20,760
Loan Balance
Impaired loans with a related allowance	1,378
Impaired loans without a related allowance	19,300
Total impaired loans held to maturity	20,678
Impaired loans, related allowance recorded	176
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	1,116
Impaired loans without a related allowance	17,073
Total impaired loans held to maturity	18,189
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	0
Impaired loans without a related allowance	280
Total loans held to maturity	280
Consumer
Unpaid Principal Balance
Impaired loans with a related allowance	998
Impaired loans without a related allowance	3,135
Total impaired loans held to maturity	4,133
Loan Balance
Impaired loans with a related allowance	997
Impaired loans without a related allowance	3,126
Total impaired loans held to maturity	4,123
Impaired loans, related allowance recorded	419
Year-to-Date Avg. Loan Balance
Impaired loans with a related allowance	1,170
Impaired loans without a related allowance	4,182
Total impaired loans held to maturity	5,352
Year-to-Date Interest Income Recognized
Impaired loans with a related allowance	11
Impaired loans without a related allowance	45
Total loans held to maturity	$ 56